.add-container .main {
  width: 100%;
  height: 500px;
  padding:20px;
}
.add-container .item {
  padding: 10px 5px;
  cursor: pointer;
  width: 100%;
  overflow: hidden; /*超出部分隐藏*/
  white-space: nowrap; /*不换行*/
  text-overflow: ellipsis; /*超出部分文字以...显示*/
}
.add-container .item:hover {
  background-color: antiquewhite;
}
.add-container form{
  width: 100%;
}
